Vallons-de-l'Erdre (; ) is a commune in the department of Loire-Atlantique, western France. The municipality was established on 1 January 2018 by merger of the former communes of Saint-Mars-la-Jaille (the seat), Bonnà Âuvre, Freigné (part of the department of Maine-et-Loire before 2018), Maumusson, Saint-Sulpice-des-Landes and Vritz.
Population data refer to the commune in its geography as of January 2025.